The information comes from the UK government daily download files https://coronavirus.data.gov.uk/details/download

The date of the test is used rather than the date the test is reported in the datafeed. The advantage of using this date is that it reduces blips for reporting delays or changes in the way th figures are counted. The disadvantage is that the figures for the last few days are low.

The data is for the 350 English districts, region and the whole nation.

The number of cases in the previous two weeks is used to calculate if the rate is increasing or decreasing.

For example on the 15th December 2020 there were a 8,700 cases in Derby, on the 22nd there were 9,315 and on the 29th there were 10,080 so on the 29th the number in last week was 765 and the number in the previous week was 615. The population of Derby is 257,302 so the number of cases per 100,000 in the two weeks is 297 and 239 an increase of 24.3%.

If you hold your mouse over a cell the cases per 100,000 figures for the previous two weeks and the percentage increase is shown

Last updated on 09-Sep-2021 at 17:00:21

Key for the colours used
	Decrease by more than 50%
	Decrease by more than 25%
	Decrease by more than 10%
	Decrease by more than 5%
	Change by less than 5% or less than 20 cases
	Increase by more than 5%
	Increase by more than 10%
	Increase by more than 25%
	Increase by more than 50%
	Increase by more than 100%

Vertical lines indicate landmark dates
05/11/2020	National Lockdown 2 Starts	purple
02/12/2020	National Lockdown 2 Ends	orange
05/01/2021	National Lockdown 3 Starts	purple
08/03/2021	Rules relaxation 1a - schools open	orange
29/03/2021	Rules relaxation 1b - rule of 6 outdoors, some sports, 'stay at home' rule ends	orange
12/04/2021	Rules relaxation 2 - pub gardens, shops, haircuts, self catering accommodation	orange
17/05/2021	Rules relaxation 3 - group of 6 indoors, hospitality incl pubs, arts inc cinemas	orange
19/07/2021	National Lockdown 3 Ends	orange

Horizontal lines indicate tier or alert level
NLD+		National Lockdown plus local travel restrictions
NLD		National Lockdown
SAH	4	Stay at Home
VH	3	Very High
H	2	High
M	1	Medium
LLD	1	Local Lockdown

Regions - check box to select only one
E	East
EM	East Midlands
L	London
NE	North East
NW	North West
SE	South East
SW	South West
WM	West Midlands
YH	Yorkshire+H